./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1874230940 <...> Warning: Permanently added '10.128.1.98' (ECDSA) to the list of known hosts. execve("./syz-executor1874230940", ["./syz-executor1874230940"], 0x7ffc1212d050 /* 10 vars */) = 0 brk(NULL) = 0x555556be8000 brk(0x555556be8c40) = 0x555556be8c40 arch_prctl(ARCH_SET_FS, 0x555556be8300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1874230940", 4096) = 28 brk(0x555556c09c40) = 0x555556c09c40 brk(0x555556c0a000) = 0x555556c0a000 mprotect(0x7fc5b2d08000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556be85d0) = 5077 ./strace-static-x86_64: Process 5077 attached [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] setpgid(0, 0) = 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5077] write(3, "1000", 4) = 4 [pid 5077] close(3) = 0 [pid 5077] memfd_create("syzkaller", 0) = 3 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc5aa84d000 [pid 5077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5077] munmap(0x7fc5aa84d000, 1048576) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5077] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5077] close(3) = 0 [pid 5077] mkdir("./file0", 0777) = 0 [pid 5077] mount("/dev/loop0", "./file0", "ext4", MS_NOEXEC|MS_SYNCHRONOUS, ",errors=continue") = 0 [pid 5077] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5077] chdir("./file0") = 0 [pid 5077] ioctl(4, LOOP_CLR_FD) = 0 [pid 5077] close(4) = 0 syzkaller login: [ 54.524704][ T5077] loop0: detected capacity change from 0 to 2048 [ 54.547839][ T5077] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. [pid 5077] mkdirat(AT_FDCWD, "./file0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5076] kill(-5077, SIGKILL) = 0 [pid 5076] kill(5077, SIGKILL) = 0 [pid 5076] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5076] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5076] getdents64(3, 0x555556be9620 /* 2 entries */, 32768) = 48 [pid 5076] getdents64(3, 0x555556be9620 /* 0 entries */, 32768) = 0 [pid 5076] close(3) = 0 [ 76.464481][ T1669] cfg80211: failed to load regulatory.db [ 286.382449][ T28] INFO: task syz-executor187:5077 blocked for more than 143 seconds. [ 286.391631][ T28] Not tainted 6.2.0-rc4-syzkaller-00041-gc1649ec55708 #0 [ 286.400205][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.409400][ T28] task:syz-executor187 state:D stack:21248 pid:5077 ppid:5076 flags:0x00004004 [ 286.419267][ T28] Call Trace: [ 286.422787][ T28] [ 286.425828][ T28] __schedule+0x995/0xe20 [ 286.430311][ T28] ? release_firmware_map_entry+0x180/0x180 [ 286.436609][ T28] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.441858][ T28] ? lockdep_hardirqs_on+0x8d/0x130 [ 286.447284][ T28] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 286.453391][ T28] ? _raw_spin_unlock+0x40/0x40 [ 286.458272][ T28] schedule+0xcb/0x190 [ 286.462538][ T28] io_schedule+0x83/0x100 [ 286.467154][ T28] bit_wait_io+0xe/0xc0 [ 286.471403][ T28] __wait_on_bit_lock+0xbb/0x1a0 [ 286.476484][ T28] ? bit_wait+0xc0/0xc0 [ 286.480776][ T28] out_of_line_wait_on_bit_lock+0x1c3/0x240 [ 286.486845][ T28] ? bit_wait+0xc0/0xc0 [ 286.491484][ T28] ? __wait_on_bit_lock+0x1a0/0x1a0 [ 286.497417][ T28] ? bit_waitqueue+0x30/0x30 [ 286.502059][ T28] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.507713][ T28] __sync_dirty_buffer+0x107/0x330 [ 286.513502][ T28] __ext4_handle_dirty_metadata+0x29a/0x810 [ 286.519616][ T28] ext4_handle_dirty_dirblock+0x363/0x6b0 [ 286.525607][ T28] ? ext4_has_metadata_csum+0x1c0/0x1c0 [ 286.531195][ T28] ? memcpy+0x3c/0x60 [ 286.535788][ T28] ? ext4_init_dot_dotdot+0x31c/0x510 [ 286.541305][ T28] ? ext4_finish_convert_inline_dir+0xf2/0x700 [ 286.547536][ T28] ext4_finish_convert_inline_dir+0x58a/0x700 [ 286.553841][ T28] ext4_convert_inline_data_nolock+0x639/0x820 [ 286.560022][ T28] ? ext4_add_dirent_to_inline+0x450/0x450 [ 286.566065][ T28] ? get_max_inline_xattr_value_size+0x3f8/0x510 [ 286.572504][ T28] ext4_try_add_inline_entry+0x683/0x990 [ 286.578147][ T28] ? ext4_fname_setup_filename+0x1ba/0x2a0 [ 286.584086][ T28] ? ext4_da_convert_inline_data_to_extent+0xa30/0xa30 [ 286.591048][ T28] ? ext4_try_create_inline_dir+0x27c/0x320 [ 286.597336][ T28] ext4_add_entry+0x5a4/0xeb0 [ 286.602039][ T28] ? ext4_inc_count+0x190/0x190 [ 286.607086][ T28] ? ext4_init_new_dir+0x557/0x670 [ 286.612523][ T28] ? ext4_init_dot_dotdot+0x510/0x510 [ 286.617917][ T28] ext4_mkdir+0x557/0xcf0 [ 286.622352][ T28] ? ext4_symlink+0xbf0/0xbf0 [ 286.627067][ T28] ? inode_permission+0xf5/0x450 [ 286.632263][ T28] ? bpf_lsm_inode_mkdir+0x5/0x10 [ 286.637389][ T28] ? security_inode_mkdir+0xdd/0x120 [ 286.642827][ T28] vfs_mkdir+0x3b3/0x590 [ 286.647102][ T28] do_mkdirat+0x25b/0x530 [ 286.651428][ T28] ? __check_object_size+0x15a/0x210 [ 286.656872][ T28] ? vfs_mkdir+0x590/0x590 [ 286.661310][ T28] ? getname_flags+0x1ea/0x4e0 [ 286.666149][ T28] __x64_sys_mkdirat+0x85/0x90 [ 286.671081][ T28] do_syscall_64+0x3d/0xb0 [ 286.675587][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.681709][ T28] RIP: 0033:0x7fc5b2c9a1e9 [ 286.686277][ T28] RSP: 002b:00007ffd23e843d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 286.694781][ T28] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc5b2c9a1e9 [ 286.702886][ T28] RDX: 0000000000000000 RSI: 0000000020000400 RDI: 00000000ffffff9c [ 286.710873][ T28] RBP: 0000000000000000 R08: 0000000000000743 R09: 00007fc5b2d08ec0 [ 286.718944][ T28] R10: 00007ffd23e842a0 R11: 0000000000000246 R12: 00007ffd23e84400 [ 286.727579][ T28] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 [ 286.735645][ T28] [ 286.738699][ T28] [ 286.738699][ T28] Showing all locks held in the system: [ 286.746660][ T28] 1 lock held by rcu_tasks_kthre/12: [ 286.751991][ T28] #0: ffffffff8d326fd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 [ 286.762689][ T28] 1 lock held by rcu_tasks_trace/13: [ 286.768057][ T28] #0: ffffffff8d3277d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 [ 286.779121][ T28] 1 lock held by khungtaskd/28: [ 286.784091][ T28] #0: ffffffff8d326e00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 286.793537][ T28] 2 locks held by getty/4748: [ 286.798314][ T28] #0: ffff88814a20e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 286.808192][ T28] #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 [ 286.818367][ T28] 3 locks held by syz-executor187/5077: [ 286.823964][ T28] #0: ffff8880753d4460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 [ 286.833228][ T28] #1: ffff888076644030 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x22a/0x4f0 [ 286.844084][ T28] #2: ffff888076643cf8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xe1/0x990 [ 286.854858][ T28] [ 286.857190][ T28] ============================================= [ 286.857190][ T28] [ 286.865793][ T28] NMI backtrace for cpu 0 [ 286.870137][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc4-syzkaller-00041-gc1649ec55708 #0 [ 286.879945][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 286.890043][ T28] Call Trace: [ 286.893335][ T28] [ 286.896268][ T28] dump_stack_lvl+0x1b1/0x290 [ 286.900959][ T28] ? preempt_schedule+0xb6/0xc0 [ 286.905900][ T28] ? nf_tcp_handle_invalid+0x630/0x630 [ 286.911368][ T28] ? panic+0x710/0x710 [ 286.915448][ T28] ? nmi_cpu_backtrace+0x205/0x4f0 [ 286.920627][ T28] nmi_cpu_backtrace+0x46f/0x4f0 [ 286.925578][ T28] ? vprintk_emit+0x109/0x1e0 [ 286.930343][ T28] ? nmi_trigger_cpumask_backtrace+0x420/0x420 [ 286.936679][ T28] ? _printk+0xc0/0x100 [ 286.940843][ T28] ? panic+0x710/0x710 [ 286.944931][ T28] ? __wake_up_klogd+0xcd/0x100 [ 286.949792][ T28] ? panic+0x710/0x710 [ 286.953870][ T28] ? nmi_trigger_cpumask_backtrace+0xc9/0x420 [ 286.960140][ T28] nmi_trigger_cpumask_backtrace+0x1ba/0x420 [ 286.966134][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 286.972466][ T28] watchdog+0xcd5/0xd20 [ 286.976695][ T28] kthread+0x266/0x300 [ 286.980831][ T28] ? hungtask_pm_notify+0x50/0x50 [ 286.985874][ T28] ? kthread_blkcg+0xd0/0xd0 [ 286.990488][ T28] ret_from_fork+0x1f/0x30 [ 286.994947][ T28] [ 286.998130][ T28] Sending NMI from CPU 0 to CPUs 1: [ 287.003441][ C1] NMI backtrace for cpu 1 [ 287.003454][ C1] CPU: 1 PID: 1056 Comm: kworker/u4:5 Not tainted 6.2.0-rc4-syzkaller-00041-gc1649ec55708 #0 [ 287.003468][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 287.003477][ C1] Workqueue: events_unbound toggle_allocation_gate [ 287.003498][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 [ 287.003518][ C1] Code: fb e8 17 00 00 00 48 8b 3d 38 ba 0a 0d 48 89 de 5b e9 77 db 54 00 cc cc cc cc cc cc cc 48 8b 04 24 65 48 8b 0c 25 40 98 03 00 <65> 8b 15 44 bc 77 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 [ 287.003529][ C1] RSP: 0018:ffffc900052a7818 EFLAGS: 00000297 [ 287.003539][ C1] RAX: ffffffff813e284a RBX: 0000000001e0ab05 RCX: ffff8880206bba80 [ 287.003548][ C1] RDX: ffff8880206bba80 RSI: 0000000001e0ab05 RDI: 000000001fffffff [ 287.003557][ C1] RBP: ffffc900052a79f0 R08: ffffffff813e283c R09: ffffed100250cc0d [ 287.003566][ C1] R10: ffffed100250cc0d R11: 1ffff1100250cc0c R12: 1ffff92000a54f14 [ 287.003576][ C1] R13: dffffc0000000000 R14: 0000000001e0ab05 R15: ffffffff81e0ab05 [ 287.003585][ C1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 287.003596][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.003611][ C1] CR2: 000055fa871af680 CR3: 000000000d08e000 CR4: 00000000003506e0 [ 287.003622][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.003629][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.003637][ C1] Call Trace: [ 287.003643][ C1] [ 287.003647][ C1] __phys_addr+0x10a/0x160 [ 287.003697][ C1] ? kmem_cache_alloc_lru+0xb5/0x320 [ 287.003760][ C1] __text_poke+0x100/0x900 [ 287.003802][ C1] ? kmem_cache_alloc+0xdd/0x350 [ 287.003815][ C1] ? __text_poke+0x900/0x900 [ 287.003829][ C1] ? text_poke+0x90/0x90 [ 287.003842][ C1] ? perf_event_text_poke+0x233/0x310 [ 287.003869][ C1] ? perf_event_bpf_output+0x220/0x220 [ 287.003888][ C1] ? trace_contention_end+0x72/0x1d0 [ 287.003907][ C1] text_poke_bp_batch+0x64c/0x850 [ 287.003921][ C1] ? arch_jump_label_transform_apply+0xe/0x20 [ 287.003951][ C1] ? __kmem_cache_alloc_bulk+0xb5/0x3e0 [ 287.003964][ C1] ? text_poke_loc_init+0x500/0x500 [ 287.003980][ C1] ? __jump_label_update+0x38e/0x3b0 [ 287.004015][ C1] text_poke_finish+0x16/0x30 [ 287.004028][ C1] arch_jump_label_transform_apply+0x13/0x20 [ 287.004048][ C1] static_key_disable_cpuslocked+0xc8/0x1b0 [ 287.004063][ C1] static_key_disable+0x16/0x20 [ 287.004075][ C1] toggle_allocation_gate+0x1a8/0x240 [ 287.004090][ C1] ? virt_to_slab+0x2c0/0x2c0 [ 287.004102][ C1] ? rcu_read_lock_sched_held+0x87/0x110 [ 287.004118][ C1] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 287.004132][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 287.004152][ C1] ? do_raw_spin_unlock+0x134/0x8a0 [ 287.004172][ C1] process_one_work+0x877/0xdb0 [ 287.004222][ C1] ? worker_detach_from_pool+0x260/0x260 [ 287.004240][ C1] ? _raw_spin_lock_irq+0xba/0xf0 [ 287.004258][ C1] ? _raw_spin_lock_irqsave+0x100/0x100 [ 287.004279][ C1] worker_thread+0xb14/0x1330 [ 287.004301][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 287.004325][ C1] kthread+0x266/0x300 [ 287.004338][ C1] ? rcu_lock_release+0x20/0x20 [ 287.004354][ C1] ? kthread_blkcg+0xd0/0xd0 [ 287.004368][ C1] ret_from_fork+0x1f/0x30 [ 287.004391][ C1] [ 287.004492][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 287.340428][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc4-syzkaller-00041-gc1649ec55708 #0 [ 287.350239][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 287.360370][ T28] Call Trace: [ 287.363641][ T28] [ 287.366563][ T28] dump_stack_lvl+0x1b1/0x290 [ 287.371255][ T28] ? nf_tcp_handle_invalid+0x630/0x630 [ 287.376808][ T28] ? panic+0x710/0x710 [ 287.380960][ T28] ? vscnprintf+0x59/0x80 [ 287.385294][ T28] panic+0x2d6/0x710 [ 287.389267][ T28] ? schedule_preempt_disabled+0x20/0x20 [ 287.394894][ T28] ? nmi_trigger_cpumask_backtrace+0x2d0/0x420 [ 287.401053][ T28] ? memcpy_page_flushcache+0x100/0x100 [ 287.406594][ T28] ? nmi_trigger_cpumask_backtrace+0x2d0/0x420 [ 287.412739][ T28] ? nmi_trigger_cpumask_backtrace+0x34e/0x420 [ 287.418891][ T28] ? nmi_trigger_cpumask_backtrace+0x353/0x420 [ 287.425122][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.431188][ T28] watchdog+0xd15/0xd20 [ 287.435362][ T28] kthread+0x266/0x300 [ 287.439423][ T28] ? hungtask_pm_notify+0x50/0x50 [ 287.444454][ T28] ? kthread_blkcg+0xd0/0xd0 [ 287.449035][ T28] ret_from_fork+0x1f/0x30 [ 287.453453][ T28] [ 287.456667][ T28] Kernel Offset: disabled [ 287.460995][ T28] Rebooting in 86400 seconds..